yeah its pretty much line up with the edge
i was looking at some photos of peoples cabs (knievel, mountains mame) and it seemed like thats where their joysticks were.
For whatever reason your cardboard mockup just makes it look really far to the left. And since mine bugs me, it's just something that I notice. All my controls are pretty crammed together underneath and it looks like you've got some room to spare if you wanted to bunch yours closer to the center.
Below is the layout of my CP. I'll dig up the measurements when I can, but I've got everything crammed pretty much as tightly in as I could and I just find myself wishing I was standing
more directly in front of my machine. If I were to do it again (or WHEN I do it again) I'll probably lose or move the P2 buttons so I can shift everything over just a bit. I never have a 2nd player anyway so the 2nd joystick is really just used for CrazyClimber, BattleZone, Robotron and the like.
EDIT TO ADD FOR REFERENCE: The 1 horizontal and 2 rectangular "bars" in the picture represent the interior of my cab. From right to left, there are 23-inches of available space between the two sides in which to fit my controls. Also, the trackball is a 2-1/4"
